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Pressure drop, heat transfer and performance of a helically coiled tubular exchanger
Published in Elsevier BV
Volume: 9
Issue: 3
Pages: 249 - 256

Experiments have been conducted, and correlations are developed for the pressure drop and heat transfer coefficient for the tube and shell sides of a helical coil heat exchanger. In the tube side, the laminar friction factor and Nusselt numbers are represented as functions of Red/D, whereas in turbulent flow the results are correlated with Re·(d/D)2. The pressure drop and heat transfer values for the shell side are found to follow the classical Blasius and Dittus-Boelter type relations, while a strong dependence on the coil to tube diameter ratio is detected. The performance of the exchanger has been tested not only as simulated experimental exchanger but also as a waste heat recovery device for a 60 HP gas turbine. Excellent corroboration of the effectiveness-NTU relation has been observed between the simulation and in situ experiments.

About the journal
JournalData powered by TypesetHeat Recovery Systems and CHP
PublisherData powered by TypesetElsevier BV
Open AccessNo